Tool-sharpener.



O. M. LONG & E. H. MATKIN.

TOOL SHARPENER.

APPIJIOATION FILED MAY 2a, 1913.

1,1 12,461 Patented 00c. 6,1914.

gave/2757a? 02% 72 Zbm IHE NORRIS FETERS 50.. FHOTO-LITHOY. WASHINGTON, L7. (7.

Orro M. Lone- AND nmnnn r1. ivrnr KIN, OF BONNIE TERRE, MISSOURI.

TOOL-SHAEPENER.

1,112,4(31. Specification of Letters Patent.

Application filed May 28, 1813.

T0 aZZ whom it may concern Be it known that we, Orro M. LONG and Emma H. MirrnrN, citizens of the United States, residing in the city of Bonne Terre and State of LulSSOllIl, have invented a new and useful Tool-Sharpener, of which the following is a specification.

This invention relates to tool Sharpeners, and it consists of the novel construction, combination and arrangement of parts hereinafter shown, described and claimed.

An object of the invention is to provlde a sharpener adapted for use in cutting or sharpening tools of the hardest structure, such, for instance, as devices composed of carborundum, emery or the like.

By reference to the illustration it wlll be understood that the invention is especially useful for shaping the disks of carborundum or emery employed by dentists, and for similar purposes, but it will be also understood that we do not deprive ourselves of any of the uses in which the invention may be em ployed.

In the accompanying drawings in which we have illustrated a preferred embodiment of our invention, Figure l is an elevation showing the device in use for re-shapmg a disk of the kind commonly employed by dentists. Fig. 2 is a side elevation also illust 'ating the device applied to the same use. Fig. 3 is an end view of the sharpener. Fig. 4 is a sectional view on the line H of Fig. l.

The invention consists preferably of a support 1 of such a size that it may easily be held and retained in the hand, and which may be provided with grooves Or serrations 2 to prevent slipping. An element 3 is supported by the support 1, having dove-talled connection therewith and is capable of lon gitudinal movement thereon. The element 3 is formed with a longitudinal slot at, and a removable stud 5 extends through the support 1 and into the slot 4, and constitutes an abutment to limit movement of the mem ber 3 with respect to the supporting mem ber 1. The member 3 may also be formed with notches or serrations 6 for engagement by the thumb or finger, whereby said member may be firmly moved and retained in the desired position. The upper end of the member 3 is enlarged, as indicated at 7, and has firmly embedded therein a diamond cutter 8.

The upper end of the supporting mem- Patented @ct. 6, 1914.

Serial No. 770,312.

her 1 is formed with a suitable depression or notch 9 adapted to receive and retain the support the device or instrument to be sharpened or re-shaped. In the drawing we have illustrated a disk 10 of the kind coromonly employed by dentists. The disk, as usual, is attached to the shaft 11 driven by the engine in the usual and well understood 1 -anner. While the shaft 11 rests within the notch or depression 9 and is rapidly r0- tated, the element 3 is moved with respect to the supporting member 1 to bring the diamond cutter 8 into contact with the periphery of the rotating disk. Any irregularity on the periphery of the disk will be removed, and the disk will be re-shaped in the required circular form adapted for further or additional use, to which it could not have been put, however while any material irregularities were in its periphery.

W e are aware that the invention may be applied to other uses than that specifically illustrated and described, and that there may be variations and alterations in the construction and arrangement of the parts without departure from the spirit and scope of the invention. Therefore, We do not restrict ourselves to specific features or uses except as pointed out in the appended claims.

YVhat we claim and desire to secure by Letters Patent of the United States is:

l. in a device of the character described, a support provided at one end with an implement rest, an element arranged to slide l0ngitudinally against one side of said support and having a slot therein, a stud on said support extending through said slot and limiting movement of said element toward and away from said implement rest, manually engageable serrations on said element whereby said element may be firmly held in any desired position against the side of said support, and a cutter carried at the end of said element toward said implement rest, substantially as described.

In a device of the character described, a support provided at one end with an implement rest, a cutter carrier having a longitudinal slot and having tongue and groove connection with. said support, manually engageable serrations on said cutter carrier whereby said carrier may be firmly held in any adjustment against the side of said support, a stud removably carried by said support and extending through said slot to limit movement of said cutter carrier toward and away from said implement rest, and a cutter mounted in the end of said cutter carrier which is toward said implement rest, substantially as described.

3. In a device of the character described, a support provided With an implement rest in one end thereof, a sliding element arranged to operate against one side of said support toward and away from said rest, a tongue and groove connection at each side of said support holding said e ement in position, said element having a longitudinal slot between said tongue and groove connections, a projection on said support extending into said slot and limiting mwement of said element, manually engageable serrations on said element whereby said element may be firmly held in any adjustment, and a cutter on one end of said element adjacent said implement rest, substantially as specified.

Copies of this patent may be obtained for l. in a device of the character described, a support having an implement rest in one end thereof, a cutter carrier, tongue and groove connection between said cutter carrier and said support, a cutter in one end of said carrier adjacent said implement rest, and a knurled thumb rest on said carrier permitting engagement thereof for positioning and holding said carrier in relative adjustment with said support, for the purpose set forth.

in Witness whereof, We have signed this specification in the presence of two subscribing Witnesses.

TTO M. LQNG. Elih lER H. MATKIN.

l i itnesses W. J. lVnnnnn, G. S. Pansons.

five cents each, by addressing the Commissioner of ?atents,

Washington, I). G. 

